Steam-generator



(No Model.) l zamen-sheet 1. J. C. STEAD.

STEAM GENERATOR.

Patented Aug'. 29, 1882.

(No Model.) 2 Sheets-Sheet 2.

J. e. STEAE.

STEAM GEEEEATOE.l

No. 263,615. Patented ug. 29, 1882.

' Il-I mi 'III' l 'UNITED STATES PA'IENT OFFICE.

JAMES C. STEAD, OF BROOKLYN, NEW YORK.

STEAM-GENERATOR.

,g SPECIFICATION forming part of Letters Patent No. 263,615, dated 'August 29., 18872.

i Appncationnleaaprnei,1882. (No model.)

To all whom it may concern Be it known that I, JAMES C. STEAD, of

' Brooklyn, in Kings county, and the State of New York, have invented a certain new and useful Improvement in Steam-Generators, of which the following is a specification.

My improvement consists essentially in the combination, with a separator whereby the steam generated will be readily separated from -the water, side walls between which the sepaembodying my invention Fig. 2 represents a side elevation of a generator with oneA of its side walls removed 5 Fig. 3 represents a transverse section of a generator of modied form, also embodying. my invention; and Fig. 4. represents a longitudinal section of a portion of the separator shown in Fig. 3.

Similar letters of `reference designate corresponding parts in all the figures.

A designates the walls-of a generator, which may be constructed of masonry in the usual manner.

B designates the furnaceyl, the grate thereof; B2, the re-door, and IB3 the ash-pit.

C designates the bridge-wall, which is surmounted by or comprises a mud-drum, C', which extends transversely across the furnace and is set at an inclination, as shown in Fig. 1, so that the mud orsediment will be deposited at its lower end, while steam and the hotter water will flow toward its upper end. At the lower end the mud-drum is provided with a handhole for cleaning it, and it may also have a hand-hole at its higher end.

Referring now particularly to Figs. 1 and 2, D designates a device arranged over or in the upper part of the furnace, and which I term a separaten because therein opportunity is afforded for the free separation of the steam from the water.

E designates a pipe leading from the rear end of the separator D, near the bottom, to the mud-drum C', asbest shown in Fig. 2; and F designates a pipe leading from the higher end of the mud-drum and communieating directly with the separator above the waterline. The cooler water flows downward from the bottom of the separator D through the pipe E, carrying with it mud and sediment, which is deposited in the mud-drum G', and the hotter water and steam pass from the higher end of the mud-drum through the pipe F to the separator, wherein the water falls, while the steam rises into the upper part of the separator and into a steamdrum, if one is attached to the separator.

- G designates headers, one of which is arranged on each side of the furnace just below or about on a level with the grate and parallel or approximately parallel with said separator. rlhese headers may extend through the front and rear walls of the generator, and may have man-holes in their ends to enable them to be readily cleaned. The feed-pipe may be connected with one of these headers, and also blow-olf pipes, if desirable.

H'designates pipes leading downward 'from the separator D to the headers Gr, and, as here represented, the said pipes lead from each end of the separator to both headers. The pipes H lead from the separator D near or at the water-line, so that they will carry down all vegetable or mineral matters which are brought to the surface of thewater by ebullition, and which seriously impede the separation of steam from the water. All such solid matters are `finally deposited in the headers G.

I designates circulating-pipes leading from the headers G upward, and thence transversely across the furnace from side to side, with a gradual upward inclination to the under side of the separator, and thence upward on the side ofthe separator, with which they communicate directly above the water'line. The several lengths composing the pipes I may be connected at the ends by ordinary return-bends, I', or by returns having hand-holes opposite the endsy of the pipes, so as to provide for more readily cleaning the pipes. In each pipe I IOO there may be a iiangefunion, a, near the headward within the separator far enough above er G, and a similar union, a', near the separator, and in this way I afford provision for detaching any one or more of the pipes` when necessary for repairs or any other purpose; and if the ends of the pipes, from which the portions are disconnected are plugged up or stopped the use ofthe generator may be continued. Vhile in operation there is a constant circulation-ot' water down the pipes H to the headers G, and from the headers up through the pipes I to the separator, and as the pipes I deliver their contents into the separator the water falls and the steam rises to the upper part thereof. As clearly shown in Fig. 2, the inclined portions of each pipe I are opposite the spaces between the portions ot adjacent pipes, and by these pipes the products of coinbustion rising and passing rearward from the furnace are intercepted in their course and are caused to travel circuitously amongand around the pipes, thereby retarding their passage and exposing a large area of very eii'ect-ive heatingsurface. As clearly represented in Fig. 1, the pipes I lead from each header G to the opposite sideof the separator D, so that portions ot' the pipes in the same horizontal plane are inclined alternately in opposite directions.

Although I prefer to employ a header, G, on each side ofthe furnace and two series of' circulating-pipes, I, it is obvious that the advantages accruing from my invention might he at least lneasurably secured bya single header and a single series of pipes.

A circulating-pipe, l2, similar to the pipes I, may be arranged adjacent to the back wall of the generator, as shown in Fig.l 2'.

Referring now to Figs. 3 and 4, D designates a separator the upper part of which is extended at the rear end, as shown clearly in Fig. 4, so as to form an offset, D', which is just below the water-line. In this example of my invention the SeparatorD is connected with the muddrum C by pipes E F, like those i shown in Figs. l and 2, and l have represented the offset to carry the water above the waterline, as shown in Fig. 4, so that the steam may readily separate from the water.

l3 designates a branch pipe extending from the pipe H. and entering the end of the header G adjacent to the feed-pipe s. In the branch pipe I3 is a valve, 14, (shown in Fig. 3,) which is hinged to a stem,15, so that it maybeswung open to allow water to iiow in the direction ot' the arrow; but, when desirable, the said stem and valve may be drawn up, so as to permit D, or with another similar separator, by a pipe similar tothe pipe H, and the branch pipe I3 and valve I4 might also be used in connection therewith. They branch pipe I3 and valve 14 might also be combined with the form ot' generator shown in Figs. 1 and 2.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. rIhe combination, in a steam-generator, of a separator, sidewalls between which the separator is arranged, a header or headers arranged parallel or approximately parallel with said separator adjacent to one or both side walls, and circulating-pipes extending separately from the header or headers to and fro across between the sidewalls transversely to and under the separator, and each communicating with the separator above the water-line, substantially as herein described.

2. The combination, with the separator D,

the mud-drumv G', and the header or headers G, of the pipes E F, connecting said separator with said mud-drum,the pipes H,leading from the separator at the water-line to the header or headers G, and the circulating-pipes I, exy tending transversely to the separator and communicating directly therewith, substantially as herein described.

3. The combination, with the separator D, header G, and pipe H, oi' the branch pipe l3 and hinged valve I4, all arranged and operating substantially as specified.

JAMES C. STEAD.

Witnesses:

EDWIN H. BROWN, E. M. BROWN..

IOO

IOS 

